We explored the mediating role of self-esteem in the relationship between bullying victimization and depression among left-behind adolescents in China. The Delaware Bullying Victimization Scale, the Center for Epidemiologic Studies Depression Scale, and the SelfEsteem Scale were used in a survey conducted with 1,204 students at four middle schools in Shandong Province, China, including 619 leftbehind adolescents and 585 non-left-behind adolescents. A significant difference was observed between these two groups: Left-behind adolescents scored significantly higher than did non-left-behind adolescents on bullying victimization and depression, and significantly lower on self-esteem. There were significant correlations between bullying victimization, self-esteem, and depression among the leftbehind adolescents. Self-esteem played a partial mediating role between bullying victimization and depression among the left-behind adolescents. The results of this study could be used as a reference for staff of schools and family members in efforts to reduce depression of left-behind adolescents.

We explored the impact of experiencing childhood abuse on exhibiting aggressive behavior, and the mediating roles of self-esteem and selfcontrol in this relationship. Participants were 425 male juvenile offenders at two prisons in China, who completed the Childhood Abuse Questionnaire, the Self-Esteem Scale, the Self-Control Scale, and the Aggression Questionnaire. As we had predicted, the chain mediating effect of self-esteem and self-control on the relationship between childhood abuse and aggressive behavior was significant. The findings benefit our understanding of the mechanisms underlying the relationship between childhood abuse and aggressive behavior among juvenile offenders.